1. Department of Biology University of Florence Sesto Fiorentino Italy
2. Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses University of South Bohemia in České Budějovice Vodňany Czech Republic
3. Royal Belgian Institute of Natural Sciences Brussels Belgium
4. Department of Animal Ecology I, Bayreuth Center of Ecology and Environmental Research (BayCEER) University of Bayreuth Bayreuth Germany
5. Cantonal Museum of Zoology Lausanne Switzerland
6. Institute for Environmental Studies, Faculty of Science Charles University Prague 2 Czech Republic
7. Department of Biology University of York York UK
8. Department of Biology University of Turku Turku Finland
9. Natural Resources Institute Finland (Luke) Helsinki Finland